Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2...Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2015 -2016. The results showed, in severe saline-alkali soil of Xin-jiang ,after growing cotton by smashing ridging, total salt in soil decreased by 31.31 %, cotton production increased by 48.80%, and salinity level declined from severe to moderate; in mild saline-alkali soil of Shaanxi, after growing summer corn by smashing ridging, total salt in soil decreased by 42.37%, corn yield increased by 34.83%, salinity degree changed from mild desalination to normal farmland ; in Ningxia, Inner Mongolia 7 Gansu ,Jilin, Henan, Hebei, and so on, smashing ridging tillage practice in different types of saline-alkali land was conducted ; according to the salt reduction and yield increase effects of saline-alkali land after smashing ridging, the development prospect of smashing ridging technique in improvement and application of saline-alkali land was proposed.展开更多
1 Introduction In the south of Eastern Transbaikalia in the border area with China and Mongolia,there are at least 300 saline without outlet lakes.They are confined to the semi-arid zone Daurian steppes with pronounce...1 Introduction In the south of Eastern Transbaikalia in the border area with China and Mongolia,there are at least 300 saline without outlet lakes.They are confined to the semi-arid zone Daurian steppes with pronounced continental salinization processes and are mostly located on the bottoms of the intermountain basins.Their origin is related to evaporative concentration of fresh waters lakes filling.展开更多
Helal El-Beah mosque in Egypt was built from many different materials as sandstone, bricks and marble. These building materials were in a bad condition due to many degradation factors, mainly ground water and salt wea...Helal El-Beah mosque in Egypt was built from many different materials as sandstone, bricks and marble. These building materials were in a bad condition due to many degradation factors, mainly ground water and salt weathering, so many deterioration phenomena were appeared as horizontal and vertical cracks, salts, loss of the Islamic decorations in the fa?ade and mihrab (Prayer niche), detachment of the plaster, biological colonization and featured dark of the stone surface. Prior to the conservation intervention, the building materials were characterized to identify their components. Scientific conservation treatment was carried out for the long-term conservation of the mosque. Conservation operations at the mosque included: repairing and roof insulation, wet and dry cleaning, joining of cracked parts and surface consolidating, replacement of the Portland cement plaster with lime plaster, re-cladding the lower part of the interior brick walls with sandstone tiles, replacement and completion of the stone blocks.展开更多
基金Supported by National Science and Technology Support Program(2014BAD06B05)
文摘Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2015 -2016. The results showed, in severe saline-alkali soil of Xin-jiang ,after growing cotton by smashing ridging, total salt in soil decreased by 31.31 %, cotton production increased by 48.80%, and salinity level declined from severe to moderate; in mild saline-alkali soil of Shaanxi, after growing summer corn by smashing ridging, total salt in soil decreased by 42.37%, corn yield increased by 34.83%, salinity degree changed from mild desalination to normal farmland ; in Ningxia, Inner Mongolia 7 Gansu ,Jilin, Henan, Hebei, and so on, smashing ridging tillage practice in different types of saline-alkali land was conducted ; according to the salt reduction and yield increase effects of saline-alkali land after smashing ridging, the development prospect of smashing ridging technique in improvement and application of saline-alkali land was proposed.
基金supported by integrated project no. 38 of the Siberian Branch, Russian Academy of Sciences "Mineral lakes of Central Asia as archive of paleoclimatic records of high solution and renewal liquid ore"
文摘1 Introduction In the south of Eastern Transbaikalia in the border area with China and Mongolia,there are at least 300 saline without outlet lakes.They are confined to the semi-arid zone Daurian steppes with pronounced continental salinization processes and are mostly located on the bottoms of the intermountain basins.Their origin is related to evaporative concentration of fresh waters lakes filling.
文摘Helal El-Beah mosque in Egypt was built from many different materials as sandstone, bricks and marble. These building materials were in a bad condition due to many degradation factors, mainly ground water and salt weathering, so many deterioration phenomena were appeared as horizontal and vertical cracks, salts, loss of the Islamic decorations in the fa?ade and mihrab (Prayer niche), detachment of the plaster, biological colonization and featured dark of the stone surface. Prior to the conservation intervention, the building materials were characterized to identify their components. Scientific conservation treatment was carried out for the long-term conservation of the mosque. Conservation operations at the mosque included: repairing and roof insulation, wet and dry cleaning, joining of cracked parts and surface consolidating, replacement of the Portland cement plaster with lime plaster, re-cladding the lower part of the interior brick walls with sandstone tiles, replacement and completion of the stone blocks.
